Improvement in pumps for deep wells



UNITED STATES i PATENT OFFICE.

IMPROVEMENT IN PUMPS FOR DEEP WELLS.

Specification forming part of Letters Patent No. 55,822, dated June 26,1866.

To all whom it may concern:

Be it known that I, ROBERT CORNELIUS, of the city of Philadelphia andState of Pennsylvania, have invented a new and useful Improvement in theConstruction of Apparatus to be Attached to Oil-Well Pumps; and I dohereby declare the following` to be a full and exact description ofthesame, reference 'being had to the annexed drawings, making` a part ofthesame, in whioh- Figure l represents an outside view of my pumpattachment. Fig. 2 is a vertical section of the same.

In the ordinary oil-Well pump a quantity of dbris is drawn into itsinterior from time to time, deranging its action.

My improvement consists in adding` to the lower end of the pump astrainer to prevent this difficulty.

My appendage is to be attached to the ordinary oil-well pump and iscomposed as follows: A B is a cylinder or tube, two inches in diameterand five inches long, with a perforated or gauze cylinder, B B, twoinches in diameter and sixteen inches long, attached to it below. Thiscylinder is surrounded by a cylinder or casing, C D, somewhat largerindiameter-say two and seven-'eighths inches diameter and twenty fourinches long. A third cylinder, E F, two inches in diameter, projects upinto C D, and is from t'teen to thirty feet long, and closed by means ofa screw cap or plu g at its lower extremity. Apertures G H I J are madeat the upper end of C D. The upper extremity of A B is screwed onto thelower end of the ordinary pump.

The operation is as follows: The rising` of the piston causes the oilfrom the well to pass in through the apertures Gr H I J and downward andinward through the cylindrical wiregauze screen B B and up into thepump. Any dbris will be retained on the outside of the screen B B andnecessarily fall into the tube E F, where they will accumulate and canbe removed at any time desired in quantity. Thus the dbris is entirelyexcluded from. the body of the pump and cannot impair the action of thepump.

Having l thus described my improvement, what I claim is- The combinationof an outer case with apertures,an interior wire-gauze or perforatedscreen, and a receptacle below for the dbris, substantially asdescribed.

ROBERT CORNELIUS.

Witnesses:

J. E. SHAW, GEO. BUCKLEY.

